This is a little besides Linux but I'll try to answer it It "will work" sort of, but I do not recommend it. The extra four pins are to supply more power to the mobo and it may get underpowered not to talk of that the 20 pin PSU may not have the umpf neededAt worst you end up destroying your hardwareGo buy a decent 500 + watts PSU - and look at the amps on 12 volts - that's the critical partCost is probably around 100 $ US

Thanks Husse. Well both the PSU and mobo are leftover items that would be no great loss. I had done a bit of research on PSU's and could not find any thing definite on that connection. How ever I will can the idea of using these components on a system that would be suspect from the git go. Thanks again.